Quotes by Carl Sagan

Suppression not the path to knowledge

The suppression of uncomfortable ideas may be common in religion and politics but it is not the path to knowledge.
It has no place in the evidence of science.

The dependency on science and technology...

We've arranged a civilization in which most crucial elements profoundly depend on science and technology. We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.